Phosphorus acid esters of 5-alkyl-and-aralkyl-1,2,4-oxadiazolyl compounds

ABSTRACT

AND X represents oxygen or sulphur, a process for their production and their use for pest control.   wherein R1 represents C1-C4-alkyl, C1-C4-alkoxy or unsubstituted or substituted phenyl, R2 represents C1-C4-alkyl, R3 represents substituted alkyl or the groups   Oxadiazolyl compounds of the formula

United States Patent 1191 Meyer et al.

[ Nov. 18, 1975 PI-IOSPHORUS ACID ESTERS OF S-ALKYL-AND-ARALKYL-1,2,4- OXADIAZOLYL COMPOUNDS [75] Inventors: Willy Meyer, Basel; Beat Biihner,

Binningen, both of Switzerland [73] Assignee: Ciba-Geigy Corporation, Ardsley,

22 Filed: Mar. 12, 1973 21 Appl. No.: 340,432

[30] Foreign Application Priority Data Primary ExaminerRaymond V. Rush Attorney, Agent, or Firm-Harry Falber; Frederick H. Rabin [57] ABSTRACT Oxadiazolyl compounds of the fonnula wherein R represents C C -alkyl, C C -alkoxy or unsubstituted or substituted phenyl, R represents C C -alkyl, R represents substituted alkyl or the groups CH CH and X represents oxygen or sulphur, a process for their produ'ctionand their use for pest control.

8 Claims, No Drawings By substituents of the second order are meant acidi- PHOSPHORUS ACID ESTERS OF fying electron acceptors. These include the following S-ALKYL-AND-ARALKYL-1,2,4-OXADIAZOLYL groups: nitro and cyano groups; tri-halogenoalkyl COMPOUNDS groups wherein halogen preferably denotes fluorine or The present invention relates to oxadiazolyl com- 5 chlorine; lower alkylsulphonyl or alkylsulphinyl groups pounds, to their production, and to their use for pest containing a branched or unbranched alkyl radical havcontrol. The oxadiazolyl compounds correspond to the ing 1 or 2 carbon atoms; sulphamyl and sulphamido formula groups, whereby the amino groups can carry one or two substituents, preferably lower alkyl groups, as defined o v above.

i W X Preferred substituents on the alkyl group in the case il of R include: halogen, NO C C -alkoxy, C C,-

\ORZ alkylthio; unsubstituted or substituted phenoxy, or phenthio, C C -alkylsulphinyl, phenylsulphinyl, I C C -alkylsulphonyl, phenylsulphonyl, C -C wherein R represents C C -alkyl, C C -alkoxy or unalkylamino, di-C C -alkylamino groups.

substituted or substituted phenyl, R represents C C Compounds of formula I preferred because of their alkyl, R represents substituted alkyl or the groups action are those wherein R represents methyl, me-

, 1 thoxy, ethyl, ethoxy, propyl or propoxy, R represents CH methyl, ethyl or propyl, R represents Cl-l Cl,

CH 2 2 2 CH2-OCH CH- ,SC2H5.

-CI-l SC l-l -CH CH OCH CH o o 0 CH, g H Q ll CH2 CHH -CH2S .CH- -S .CH- ,N

I L ll Cl-l Nl-lCl-l v o and X represents oxygen or sulphur.

The alkyl and alkoxy groups denoted by R and R CH2 S CH3 CH2 Q can be straight-chainor branched. Examples of such radicals are inter alia: methyl, methoxy, ethyl, ethoxy, propyl, propoxy, isopropyl, isopropoxy, n-butyl, nand X represents oxygen or sulphur. butoxy and i-, sec.- or tert.-butyl. The compounds of formula I are produced by known The substituents on the phenyl and alkyl radical in methods; for example,

the case of R which can be straight-chain or a. by reaction of a hydroxyoxadiazole of the formula branched, can .be of the first or second order. By substituents of the first order are meant basicity-intensifying electron donors. These include the following groups: halogen atoms such as fluorine, chlorine, bro- R 0H (II) mine or iodine; alkoxy and alkylthio groups having 1 to 4 carbon atoms, which can be branched or unbranched, and are preferably unbranched and contain 1 to 2 carbon atoms; lower alkoxyalkyl groups, whereby the abovegiven definitions apply here too; prim, sec. and tert, amino groups, whereby lower alkyl,

with a phosphoric acid halide of the formula alkanoyl and alkoxycarbonyl groups are preferred subi i R stituents; hydroxyl and mercapto groups. The phenyl Halin radical can also be substituted by lower alkyl and lower .ORQ

halogenoalkyl groups.

3 in the presence of an acid-binding agent; or

b. by reaction of a salt of a hydroxyoxadiazole of formula II with a phosphoric acid halide of formula III. In formulae I] and III, the symbols R R R aand X have the meanings given under formula I, and Hal stands for chlorine, bromine or iodine, particularly however for chlorine or bromine.

Salts of 3-hydroxyoxadiazoles of formula II which are suitable for the process according to the invention are, for example, salts of monovalent metals, particularly the alkali metal salts.

Acid-binding agents which can be used are: tertiary amines, e.g. trialkylamines, pyridine, dialkylanilines; inorganic bases such as hydrides or hydroxides; carbonates and bicarbonates of alkali metals and alkalineearth metals. It is sometimes necessary for catalysts to be used in the reactions, such as copper or copper chloride.

The processes (a) and (b) are performed at a reaction temperature of between and 130C, at normal pressure and in solvents of diluents. Suitable solvents or diluents are, for example, ethers and ethereal compounds, such as diethyl ether, dipropyl ether, dioxane, dimethoxyethane or tetrahydrofuran; amides such as N,N-dialkylated carboxylic acid amides; aliphatic, aromatic as well as halogenated hydrocarbons, especially benzene, toluene, xylenes, chloroform or chlorobenzene', and nitriles such as acetonitriles; DMSO, and ketones such as acetone or methyl ethyl ketone.

The starting materials of formulae II and Ill are in some cases known, and can be produced by methods analogous to known methods.

The compounds of formula I have a broad biocidal action, and can be used therefore for the control of a wide variety of plant and animal pests.

The said compounds are particularly suitable for the control of insects of the families: Acrididae, Blattidae, Gryllidae, Gryllotalpidae, Tettigoniidae, Cimicidae, Phyrrhocoridae, Reduviidae, Aphididae, Delphacidae, Diaspididae, Pseudococcidae, Chrysomelidae, Coccinellidae, Bruchidae, Scarabaeidae, Dermestidae, Tenebrionidae, Curculionidae, Tineidae, Noctuidae, Lymantriidae, Pyralidae, Gallen'dae, Culicidae, Tipulidae, Stomoxydae, Muscidae, Calliphoridae, Trypetidae and Pulicidae; as well as acarids of the families: Ixodidae, Argasidae, Tetranychidae and Dermanyssidae.

The insecticidal or acaricidal action can be substantially broadened and adapted to suit the given circumstances by the addition of other insecticides and/or acaricides. Suitable additives are, for example, the following active substances:

Organic phosphorus compounds Bis-0,0-diethylphosphoric acid anhydride (TEPP) Dimethyl-( 2 ,2 ,2-trichlorol-hydroxyethyl )-phosphonate (TRICHLORFON) l ,2-dibromo-2,2-dichloroethyldimethylphosphate (NALED) 2,2-dichlorovinyldimethylphosphate (DICHLORVOS) 2-methoxycarbamyl- 1 -methylvinyldimethylphosphate (MEVINPHOS) Dimethyl- 1-methyl-2-(methylcarbamoyl)-vinylphosphate cis (MONOCROTOPHOS) 3-(dimethoxyphosphinyloxy)-N,N-dimethyl-ciscrotonamide (DICROTOPHOS) 2-chloro-2-diethylcarbamo yl- 1 -methylvin yldimethylphosphate (PHOSPHAMIDON) 0,0-diethyl-O(or S)-2-(ethylthio)-ethylthiophosphate (DEMETON) S-ethylthioethyl-0,0-dimethyl-dithiophosphate (THI- OMETON) 0,0-diethyl-S-ethylmercaptomethyldithiophosphate (PHORATE) 0,0-diethyl-S-2-(ethylthio )ethyldithiophosphate (DI- SULFOTON) 0,0-dimethyl-S-2-(ethylsulphinyl)ethylthiophosphate (OXYDEMETON METHYL) 0,0-dimethyl-S-( l,2-dicarbethoxyethyldithiophosphate (MALATHION) 0,0,0,0-tetraethyl-S,S -methylene-bis-dithiophosphate (ETHION) O-ethyl-S,S-dipropyldithiophosphate 0,0-dimethyl-S-(N-methyl-N-formylcarbamoylmethyl )-dithiophosphate (FORMOTHION) 0,0-dimethyl-S-(N-methylcarbamoylmethyl)dithiophosphate (DIMETHOATE) 0,0-dimethyl-0--p-nitrophenylthiophosphate (PA- RATHION-METHYL) 0,0-diethyl-O-p-nitrophenylthiophosphate (PARA- THION) 0-ethyl-0-p-nitrophenylphenylthiophosphate (EPN) 0,0-dimethyl-0-( 4-nitro-m-tolyl )thiophosphate (FENIT ROTHION) 0,0-dimethyl-O-2,4,5-t richlorophenylthiophosphate (RONN EL) O-ethyl-O ,2,4,S-trichlorophenylethylthiophosphate (TRICHLORONATE 0,0-dime thyl-O-2,5-dic hloro-4-bromophenylthiophosphate BROMOPHOS) 0,0-dime thyl-0-( 2,5-dichloro-4-iodophenyl )-thiophosphate (J ODOFENPHOS 4-tert.butyl-2-chlorophenyl-N-methyl-O-methylamidophosphate (CRUFOMATE) 0,0-dimethyl-0-( 3-me thyl-4-methylmercaptophenyl thiophosphate (FENTHION) Isopropylamino-O-ethyl-O-( 4-methylmercapto-3- methylphenyl )phosph ate 0,0-diethyl-0-p-( methylsulphinyl )phenyl-thiophoaphate (FENSULFOTHION) 0-p-( dimethylsulphamido)phenyl-0,0-dimethylthiophosphate (FAMPHU R) 0,0,0 ,0 -tetramethyl-0,0 -thiodi-p -phenylenethiophosphate O-ethyl-S -phenyl-ethyldithiophosphate 0,0-dime thyl-0-( a-me thylbenzyl-3-hydroxycrotonyl phosphate 2-chloro- 1-( 2 ,4-dichlorophenyl )vinyl-diethylphosphate (CHLORFENV INPHOS) 2-chlorol 2,4,5 )-trichlorophenyl )vinyl-dimethylphosphate 0-[2-chloro- 1-(2,5-dichlorophenyl)]vinyl-0,0-diethylthio phosphate Phenylgly oxylonitriloxime-0,0-diethylthiophosphate PHOXIM) 0,0-diethyl-0-( 3-chloro-4-methyl-2-o xo-2H- l -benzopyran-7 -yl )thiophosp hate (COUMAPHOS) 2 ,3-p-dio xandithiol-S,S -bis-0,0-diethyldithiophophate) (DIOXATHION) 5 6-chloro-2-oxo-3-benzoxazolinyl )methyl ]0,0-diethyldithiophosphate PHOSALONE) 2-( dietho xyphosphinylimino l ,3-dithiolane 0,0-dimethyl-S-[2-methoxy-1,3 ,4-thiadiazol-5-( 4H onyl-( 4)methyl ]dithiophosphate 0,0-dimethyl-S-phthalimidomethyl-dithiophosphate (IMIDAN) 9 Z-dimethylaminophenyl-N-methylcarbam ate 2-diallylaminophenyl-N-methylcarbamate 4-diallylamino-3 ,5-xylyl-N-methylcarbamate LY XICARE) 4-benzothienyl-N-methylcarbamate 2 ,3-dihydro- 2-methyl-7-benzofuranyl-N-methylcarbamate 3-methyl-1-phenylpyrazol-5-yl-N,N-dimethylcarbamate l-isopropyl- 3-methylpyrazol-5-yl-N,N-dimethylcarbamate (ISOLAN) 2-dimethylamino-5 ,6-dimethylpyrimidin-4yl-N,N-

dimethyl-carbamate 3-methyl-4-dimethylaminomethyleniminophenyl-N- methylcarbamate 3 ,4-dimethylphenyl-N-methylcarbamate 2-cyclopentylphenyl-N-methylcarbamate 3-dimethylamino-methyleneiminophenyl-N-methylcarbamate (FORMETANATE) and its salts 1-methylthio-ethylimino-N-methylcarbam ate THOMYL 2-methylcarbamoyloximino-1 ,3-dithiolane 5-methyl-2-methylcarbamoyloximino- 1 ,3-oxythiolane 2-( 1 -methoxy-2-propoxy )phenyl-N-methylcarbamate 2-( l-butin-3 -yl-oxy )phenyl-N-methylcarbamate l-dimethylcarbamyl- 1 -methylthio-O-methylcarbamylformoxime 1-( 2 -cyanoethylthio )-O-m ethylcarbamyl-acetaldoxl-methylthio-O-carbamyl-acetaldoxime O-( 3-sec .b'utylphenyl )-N-p henylthio-N-methylcarbamate 2 ,S-dimethyl-1,3-dithiolane-2-(O-methylcarbamyl)- aldoxime O-Z-diphenyl-N-methylcarbamate 2-( N-methylcarbamyl-oximino)-3-chloro-bicyclo[2.2. 1 ]heptane 2-( N-methylcarbamyl-oximino )-bicyclo[ 2.2.1 ]heptane 3-isopropylphenyl-N-meth yl-N-chloroac etal-carbamate 3-isopropylphenyl-N-meth yl-N-methylthiomethyl-carbamate O-( 2,2-dimethyl-4-chloro-2,3-dihydro-7-benzofuranyl -N-methylcarb amate O-( 2,2 ,4-trim ethyl-2,3-dih ydro-7-benzofuranyl )-N- methylcarbamate O-naphthyl-N-methyl-N-ac etal-carbamate O-5 ,6,7 ,8-te trahydronaphthyl-N-methyl-carbamate 3-isopropyl-4-methylthio-p henyl-N-methylcarbamate 3 ,5 -dimethy l-4-methoxy-p henyl-N-methylcarbamate 3-methoxym ethoxy-phenyl-N-methylcarbamate 3-allyloxyphenyl-N-methylcarbamate 2-propargylo xymethoxy-phenyl-N-methyl-carbamate 2-allyloxyph enyl-N-methyl -carbamate 4-methoxycarbonylamino- 3-isopropylphenyl-N-methyl-carbam ate 3 ,5 -dimethy1-4-methoxycarbonylamino-phenyl-N- methyl-carbamate Z-y-methylthiopropylphen yl-N-methyl-carbamate 3-( oz-methox ymethyl-Z-propenyl )-phenyl-N-methylcarbamate 2-chloro-5-tert.-butyl-phen yl-N-methyl-carbamate 4-( methyl-propargylamino-3 ,S-XyIyl-N-methyI-carbamate 4-( methyl-y-chloroallylam ino )-3 ,5-xylyl-N-methyl-carbamate 4-( methyl-B-chloroallylam ino )-3 ,S-xylyl-N-methylcarbamate 1 0 l( B-ethoxycarbonylethyl )-3-methyl-5-pyrazolyl-N,N-'

dimethylcarbamate 3-methyl-4-( dimethylamino-methylmercaptomethyleneimino )phen yl-N-methylcarbamate l,3-bis(carbamoylthio)-2-( N,N-dimethylamino propan ehydrochloride 5 ,5-dimethylhydroresorcinoldimethylcarbamate 2- ethyl-p ropargylamino -phenyl-N-methylcarbamate 2- methyl-propargylam ino -phenyl-N-methylcarbamate 2-[dipropargylamino]-phenyl-N-methylcarbamate 4- diprop argylamino -3 -tolyl-N-methylcarbamate 4- [diprop argylamino -3 ,5-xylyl-N-methylcarbamate 2-[allyl-isopropylamino ]-phenyl-N-methylcarbamate 3- allyl-isopropylamino -phenyl-N-methylcarbamate Chlorinated Hydrocarbons 'y-hexachlorocyclohexane [GAMMEXANE; LINDAN,

y HCH] 1,2,4,5 ,6,7,8,8-octachloro-3a,4,7,atetrahydro-4,7-

methylene indane [CHLORDAN] 1,4,5,6,7,8,8-heptachloro, 3a4,7,7a-tetrahydro-4,7-

methylene indane [HEPTACHLOR] 1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-hexahydroendo-l ,4-eXo-5 ,S-dimethanonaphthalene [ALDRIN] 1,2,3,4, 10, 1 O-hexachloro-6,7-epoxyl ,4,4a,5,6,7,8,8a-

octahydro-exo-l ,4-endo-5 ,S-dimethanonaphthalene [DIELDRIN] l ,2,3,4,10, lO-heXachloro-5,7-epoxyl ,4,4a5,6,7,8,80zoctahyd ro-endo-endo-S ,8-dimethanonaphthalene [ENDRIN].

In addition to possessing the above mentioned properties, the compounds of formula I are also effective against members of the division Thallophyta. Some of these compounds thus have a bactericidal action. They are particularly effective, however, against fungi, especially against phytopathogenic fungi belonging to the following classes: Oomycetes, Zygomycetes, Ascomycetes, Basidiomycetes and Denteromycetes. The compounds of formula I have moreover a fungitoxic action in the case of fungi which attack plants from the soil. Furthermore, the new active substances are suitable for the treatment of seeds, fruits, tubers, and so forth, to obtain protection against fungus infections. The compounds of formula 1 are suitable also for the control of phytopathogenic nematodes.

The compounds of formula I can be used on their own or together with suitable carriers and/or additives. Suitable carriers and additives may be solid or liquid, and correspond to the substances common in formulation practice, such as, eg natural and regenerated substances, solvents, dispersing agents, wetting agents, adhesives, thickeners, binders and/or fertilisers.

For application, the compounds of formula 1 can be processed into the form of dusts, emulsion concentrates, granulates, dispersions, sprays, or solutions, the formulation of these preparations being effected in a manner commonly known in practice. Also to be mentioned are cattle dips and spray races, in which aqueous preparations are used.

The agents according to the invention are produced in a manner known per se by the intimate mixing and- /or grinding of active substances of formula 1 with the suitable carriers, optionally with the addition of dispersing agents or solvents which are inert to the active substances. The active substances can be obtained and 1 1 used in the following preparation forms:

solid preparations: dusts, scattering agents, granulates, coated granulates, impregnated granulates and homogeneous granulates;

liquid preparations:

a. water dispersible active substance concentrates:

wettable powders, pastes, emulsions;

b. solutions.

The solid preparations (dusts, scattering agents) are produced by the mixing of the active substances with solid carriers. Suitable carriers are, e.g. kaolin, talcum, bole, loess, chalk, limestone, ground limestone, attapulgite, dolomite, diatomaceous earth, precipitated silicic acid, alkaline-earth silicates, sodium and potassium aluminium silicates (feldspar and mica), calcium and magnesium sulphates, magnesium oxide, ground synthetic materials, fertilisers such as ammonium sulphate, ammonium phosphate, ammonium nitrate, urea, ground vegetable products such as bran, bark dust, sawdust, ground nutshells, cellulose powder, residues of plant extractions, active charcoal, etc., alone or in admixture with each other.

Granulates can be very easily prepared by a process in which an active substance of formula I is dissolved in an organic solvent, the thus obtained solution applied to a granulated mineral, e.g. attapulgite, SiO granicalcium, bentonite, etc., and the organic solvent then evaporated off.

It is possible also to produce polymer granulates; in this case the active substances of formula I are mixed with polymerisable compounds (urea/formaldehyde; dicyandiamide/formaldehyde; melamine/formaldehyde, or others); polymerisation is then carefully carried out in a manner which leaves the active substances unaffected, and granulation performed actually during the gel forming process. It is more favourable, however, to impregnate finished porous polymer granules (urea/- formaldehyde, polyacrylonitrile, polyester and others), having a specific surface area and a favourable predeterminable adsorption/desorption ratio, with the active substances, e.g. in the form of their solutions (in a lowboiling solvent), and to then remove the solvent. Polymer granulates of this kind can be also sprayed in he form of microgranulates, having bulk weights of preferably 300 g/liter to 600 g/liter, with the aid of spray apparatus. Spraying can be carried out over extensive areas of useful plant crops by the use of aeoplanes.

Granulates can also be obtained by the compacting of the carrier material with the active substances and additives, and a subsequent reducing operation.

Moreover, it is possible to add to these mixtures additives stabilising the active substance and/or nonionic, anion-active and cation-active substances which im prove, e.g. the adhesivenss of the active substances on plants and parts of plants (adhesives and agglutinants), and/or ensure a better wettability (wetting agents) as well as dispersibility (dispersing agents).

The following substances are, for example, suitable: olein/lime mixture, cellulose derivatinves (methyl cellulose, carboxymethyl cellulose), hydroxyethylene glycol ethers of monoalkyl and dialkyl phenols having 5 to ethylene oxide radicals per molecule and 8 to 9 carbon atoms in the alkyl radical, ligninsulphonic acid, the alkali metal and alkaline-earth metal salts thereof, polyethylene glycol ethers (carbowaxes), fatty alcohol polyglycol ethers having 5 to ethylene oxide radicals per molecule and 8 to 18 carbon atoms in the fatty alcohol moiety, condensation products of ethylene oxide,

12 propylene oxide, polyvinylpyrrolidones, polyvinyl alcohols, condensation products of urea and formaldehyde, as well as latex products.

Water-dispersible concentrates of active substances, i.e. wettable powders, pastes and emulsion concentrates, are agents which can be diluted with water to obtain any desired concentration. They consist of active substance, carrier, optionally additives which stabilise the active substance, surface-active substances, and anti-foam agents and, optionally, solvents.

The wettable powders and pastes are obtained by the mixing and grinding of the active substances with dispersing agents and pulverulent carriers, in suitable devices, until homogeneity is obtained. Suitable carriers are, e.g. those previously mentioned in the case of solid preparations. It is advantageous in some cases to use mixtures of different carriers. As dispersing agents it is possible to use, e.g.: condensation products of sulphonated napthalene and sulphonated naphthalene derivatives with formaldehyde, condensation products of napthalene or of naphthalenesulphonic acids with phenol and formaldehyde, as well as alkali, ammonium and alkaline-earth metal salts of ligninsulphonic acid, also alkylarylsulphonates, alkali metal salts and alkalineearth salts of dibutyl naphthalenesulphonic acid, fatty alcohol sulphates such as salts of sulphated hexadecanols, heptadecanols, octadecanols, and salts of sulphated fatty alcohol glycol ethers, the sodium salt of oleyl methyl tauride, ditertiary ethylene glycols, dialkyl dilauryl ammonium chloride, and fatty acid alkalimetal and alkaline-earth metal salts.

Suitable anti-foam agents are, e.g. silicones.

The active substances are so mixed, ground, sieved and strained with the above mentioned additives that the solid constituent in the case of wettable powders has a particle size not exceeding 0.02 to 0.04 mm, and in the case of pastes not exceeding 0.03 mm. For the preparation of emulsion concentrates and pastes, dispersing agents are used such as those mentioned in the preceding paragraphs, organic solvents and water. Suitable solvents are, e.g. alcohols, benzene, xylene, toluene, dimethylsulphoxide, and mineral oil fractions boiling in the range of 120 to 350C. The solvents must be practically odourless, non-phytotoxic, and inert to the active substances.

Furthermore, the agents according to the invention can be used in the form of solutions. For this purpose, the active substance, or several active substances, of the general formula I is dissolved in suitable organic solvents, solvent mixtures, or water. As organic solvents it is possible to use aliphatic and aromatic hydrocarbons, their chlorinated derivatives, alkylnaphthalenes, mineral oils on their own or in admixture with each other.

The content of active substance in the above described agents is between 0.1 and it is to be mentioned in this connection that in the case of application of the agents from an aeroplane, or bymeans of some other suitable application devices, concentrations of up to 99.5% can be used, or even the pure active substance.

The active substances of formula I can be prepared, e.g. as follows:

Dusts:

The following substances are used for the preparation of (a) a 5% dust, and (b) a 2% dust:

parts of active substance 95 parts of talcum.

2 parts of active substance 1 part of highly dispersed silicic acid 97 parts of talcum.

The active substances are mixed and ground with the carriers. Granulate:

The following substances are used to produce a 5% granulate:

5 parts of active substance,

0.25 parts of epichlorhydrin,

0.25 parts of cetyl polyglycol ether,

3.50 parts of polyethylene glycol,

91 parts of kaolin (particle size 0.3 0.8 mm).

The active substance is mixed with epichlorhydrin and dissolved with 6 parts of acetone; the polyethylene glycol and cetyl polyglycol ether are then added. The

thus obtained solution is sprayed on to kaolin, and the acetone subsequently evaporated in vacuo. Wettable powder:

The following constituents are used for the preparation of (a) a 40%, (b) and (c) a 25%, and (d) a 10% wettable powder:

40 parts of active substance, 5 parts of sodium lignin sulphonate, 1 part of sodium dibutyl-naphthalene sulphonate, 54 parts of silicic acid.

25 parts of active substance, 4.5 parts of calcium lignin sulphonate 1.9 parts of Champagne chalk/hydroxyethyl cellulose mixture (1:1), 1.5 parts of sodium dibutyl naphthalene sulphonate, 19.5 parts of silicic acid, 19.5 parts of Champagne chalk, 28.1 parts of kaolin.

25 parts of active substance,

2.5 parts of isooctylphenoxy-polyoxyethylene-ethanol,

1.7 parts of Champagne chalk/hydroxyethyl cellulose mixture (1:1),

8.3 parts of sodium aluminium silicate,

16.5 parts of kieselguhr,

46 parts of kaolin.

10 parts of active substance,

3 parts of a mixture of the sodium salts of saturated fatty alcohol sulphates,

5 parts of naphthalenesulphonic acid/formaldehyde condensate,

82 parts of kaolin.

The active substances are intimately mixed, in suitable mixers, with the additives, the. mixture being then ground in the appropriate mills and rollers. Wettable 14 powders are obtained which can be diluted with water to give suspensions of any desired concentration. Emulsifiable concentrates:

The following substances are used to produce (a) a 10% and (b) a 25% emulsifiable concentrate:

10 parts of active substance,

3.4 parts of epoxidised vegetable oil,

13.4 parts of a combination emulsifier consisting of fatty alcohol polyglycol ether and alkylarylsulphonate calcium salt,

40 parts of dimethylformamide,

43.2 parts of xylene.

25 parts of active substance, 2.5 parts of epoxidised vegetable oil, 10 parts of an alkylarylsulphonate/fatty alcohol-polyglycol ether mixture 5 parts of dimethylformamide, 57.5 parts of xylene.

From these concentrates it is possible to produce, by dilution with water, emulsions of any desired concentration.

Spray:

The following constituents are used to prepare a 5% spray:

5 parts of active substance, 1 part of epichlorhydrin, 94 parts of ligroin (boiling limits 160l90C).

EXAMPLE 1 Production of O ,O-diethyl-O [5 -phenoxylmethyl-l ,2 ,4-oxadiazo1yl- (3 ]thiophosphate a. An amount of 23.6 g of hydroxylamine-hydrochloride is dissolved in 70 m1 of pyridine; an ddition is then made dropwise at 5 10C within 30 minutes of 54.8

' g of phenoxyacetylisocyanate. After 1 hours stirring,

- ice and ca. 50 cm of conc. l-lCl, are added. The acid suspension is filtered off, washed well with ice water, and then suspended in a mixer with 150 ml of H 0. The

. suspension is rendered strongly alkaline with 30 cm of of S-phenoxymethyl-1,2,4-oxadiazol-3-ol in 250 m1 of methyl ethyl ketone, and the whole heated for half an hour at C. After cooling, an addition is made at 50C of 15 g of chlorothiophosphoric acid diethyl ester, and stirring subsequently maintained for 15 hours at 55C. Thesu'spension is cooled to 0C, cleared by filtration and fully"concentrated by evaporation. After column chromatography with toluene through silica gel, gthere is obtained pale yellow 0,0-diethyl- O[5-phenoxymethyl-l,2,4oxadiazolyl (3)]-thiophosphate having a 3,920,677 1 I 15 16 refractive index of n 1.5195. Further compounds in an analogous manner are as Analysis: calculated: C, 45.35; H, 4.98; N, 8.14. follows: Found: C, 45.10;}1, 5.20 N, 8.00.

-continued s o N l s L c (OCH) EXAMPLE 2 A. lnsecticidal stomach poison action Cotton and potato plants were sprayed with a 0.05% aqueous active-substance emulsion (obtained from a emulsifiable concentrate).

After the drying of the obtained coating, Spodoptera litoralis or H eliothis virescens larvae L; were placed onto the cotton plants, and Colorada beetle larvae,

B. Systemic insecticidal action In order to determine the systemic action, rooted bean plants (Vicia faba) were placed into a 0.01% aqueous active-substance solution (obtained from a 10% emulsifiable concentrate). After a period of 24 hours, bean aphids (A phis fabae) were placed onto the parts of the plants above the soil. The insects were protected by a special device from the effects of contact and of gas. The test was carried out at 24C with 70% relative humidity.

In the above tests, the compounds according to Example 1 exhibited a systemic action against Aphisfabae.

EXAMPLE 3 Action against Chilo'suppressalis Rice plants of the type Calora were planted, 6 plants per pot, in plastic pots having a top diameter of 17 cm, and grown to a height of ca. cm. Infestation with Chilo suppressalis larvae:(L 34 mm long) was carried out 2 days after application of the active substance in granular form (amount applied 8 kg of active substance per hectare) to the paddy water. The evaluation of the insecticidal action was made 10 days after application of the granules.

The compounds according to Example 1 were effec-' tive against Chilo suppressalis in the above test.

EXAMPLE 4 Action against ticks A. Rhipicephalus bursa ln each case, 5 adult ticks or 50 tick larvae were placed into a small glass test tube, and the test tubes then immersed for l to 2 minutes in 2 ml of an aqueous emulsion from a dilution series of 100, 10, 1' and 0.1 ppm of test substance. The tubes were then sealed with a standardised cotton plug, and inverted so that the active substance emulsion could be absorbed by the cotton wool. i

An evaluation of the case of the adults was made after 2 weeks, and in the case of the larvae after 2 days. There were two repeats for each test.

B. Boophilus micfoplus (larvae) With a dilution series analogous to that in Test A, tests were carried out with 20 sensitive larvae and OP- resistant larvae, respectively (resistance is with respect to diazinon compatibility).

The compounds according to Example 1 were effective in these tests against adults and larvae of Rhipicephalus bursa and against sensitive and OP-resistant larvae, respectively, of Boophilus microplus.

EXAMPLE 5 Acaricidal action Phaseolus vulgaris (plants) were infested, 12 hours before the test for acaricidal action, with an infested piece of leaf from a mass culture of Tetranychus urticae. The transferred mobile stages were sprayed with the emulsified test preparations from a chromatography-sprayer in a manner ensuring no running off of the spray liquor. An assessment was made after 2 to 7 days, by examination under a binocular, of the living and of the dead larvae, adults and eggs, and the results expressed in percentages. The treated plants were kept during the holding time in greenhouse compartments at 25C.

The compounds according to Example l were effective in the above test against adults, larvae and eggs of Tetranychus urticae.

EXAMPLE 6 Action against soil nematodes In order to test the action against soil nematodes the active substances were added, in the concentration stated in each case, to soil infested with root-gallnematodes (Meloidogyne arenaria), and the whole intimately mixed. In the one test series, tomato seedlings were planted immediately afterwards in the thus prepared soil, and in the other test series tomatoes were planted after a waiting time of 8 days.

For an assessment of the nematicidal action, the galls present on the roots were counted 28 days after planting and sowing, respectively.

The active substances according to Example 1 exhibited in this test a good action against Meloidogyne arenaria.

We claim:

1. A compound of the formula KM Q.

24 wherein R represents C -C alkyl or C -C alkoxy; R represents C -C alkyl; R represents CH Cl, -CHCl CCl CH CH B'r, CF -CH- CH -CH CI, CH O-C H CH S-C H 2. A compound according to claim 1 wherein R represents methyl, methoxy, ethyl, ethoxy, propyl or propoxy; and R represents methyl, ethyl or propyl.

3. The compound of claim 2, wherein R represents ethyl or ethoxy, R represents ethyl and R represents -CH Cl, CH Cl-l CH Cl, Cl-l O-C H CH2S'CH3 and CH2S(i)C3H7.

4. Compound according to claim 2 of the formula 5. Compound according to claim 2 of the formula 6. Compound according to claim 2 of the formula 5 Mal 7. Compound according to claim 2 of the formula CHgS-CHg-C 8. Compound according to claim 2 of the formula UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 r Dated November 18 7 Willy Meyer et al Invent0r(s) It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

The term of this patent subsequent to September 2 1992 has been disclaimed.

Signed and Sealed this second Day Of March 1976 [SEAL] Attest:

Anesting of, e (UIYIHII SSI UHP' U] laltllls and ilddmtllld 

1. A COMPOUND OF THE FORMULA
 2. A compound according to claim 1 wherein R1 represents methyl, methoxy, ethyl, ethoxy, propyl or propoxy; and R2 represents methyl, ethyl or propyl.
 3. The compound of claim 2, wherein R1 represents ethyl or ethoxy, R2 represents ethyl and R3 represents -CH2Cl, -CH2-CH2-CH2-Cl, -CH2-O-C6H5, CH2-S-CH3 and CH2-S-(i)C3H7.
 4. Compound according to claim 2 of the formula
 5. Compound according to claim 2 of the formula
 6. Compound according to claim 2 of the formula
 7. Compound according to claim 2 of the formula
 8. Compound according to claim 2 of the formula 